Sulfur

Question 1

What are the use of sulfuric acid?

Answer 1

Used to make fertilizers,detergents, paints, fibres

Question 2

What are the raw materials for Contact process?

Answer 2

Sulfur from beneath the ground
Sulfide ores
Hydrogen sulfide form petroleum or natural gas

Question 3

What are the conditions for the Contact process?

Answer 3

Catalyst vanadium oxide
450C
Atmospheric pressure

Question 4

Describe the process of the Contact process

Answer 4

1. A spray of molten sulfur is burned in a furnace in dry air - sulfur dioxide is formed
   2 The converted contains 4 layers of vanadium oxide - sulfur dioxide is cooled and reacted with excess air.
   Sulfur dioxide -> sulfur trioxide
2. In absorber, sulfur trioxide is absorbed into a 98% solution of sulfuric acid - formed oleum.
3. Oleum is mixed with water to concentrated sulfuric acid.